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Added startupProbe endpoint to minimize metrics gaps #31

Description

@jkroepke

Hi,

i would like to ask if its possible to and an endpoint which observes if all defined metric collectors are run once.

Such an endpoint could be used for an startupProbe. Together with RollingUpgrade, Prometheus would reference to the existing running pod until the metrics from the new pods are available. This would minimize metrics gaps on Promethes and Grafana.

Since costs queries are enabled, the initial run could takes a while. The endpoint should take care of the cache, e.g. the costs cached an available, the endpoint should not wait for an initial cost query run.

Activity

  1. mblaschke commented on Mar 21, 2023

    @mblaschke
    Member

    will have a look how to implement this feature

  2. mblaschke commented on May 13, 2023

    @mblaschke
    Member

    i've added caching to all collectors, so this should speed up the the restart of the exporter
    added with 23.5.0-beta0

  3. mblaschke commented on Aug 20, 2023

    @mblaschke
    Member

    is caching solving the issue?

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